CN103645035B - A kind of lighting jig - Google Patents

A kind of lighting jig Download PDF

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Publication number
CN103645035B
CN103645035B CN201310681219.8A CN201310681219A CN103645035B CN 103645035 B CN103645035 B CN 103645035B CN 201310681219 A CN201310681219 A CN 201310681219A CN 103645035 B CN103645035 B CN 103645035B
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China
Prior art keywords
lighting jig
telescopic
subgroup
backlight module
lighting
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CN201310681219.8A
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CN103645035A (en
Inventor
王刚
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BOE Technology Group Co Ltd
Hefei BOE Display Light Co Ltd
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BOE Technology Group Co Ltd
Hefei BOE Display Light Co Ltd
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Abstract

The embodiment of the invention discloses a kind of lighting jig, relate to display technique field, when using this lighting jig to carry out lighting test to backlight module, the possibility that the phenomenon such as can reduce the burn to flexible PCB in backlight module, burn out occurs.This lighting jig, comprise the lighting jig body of platy structure, be positioned at the power switch of described lighting jig body, also comprise: be positioned at the compressing structure above described lighting jig body, described compressing structure comprises and compresses body and to the telescopic end subgroup of downward-extension and switch contact, described switch contact corresponds to described power switch and arranges, described telescopic end subgroup is arranged corresponding to the power input terminal of backlight module, and the distance between described switch contact and described power switch is greater than the distance between described telescopic end subgroup and described power input terminal; Connect the drive mechanism of described compression body and described lighting jig body, described drive mechanism drives described compression body to move up and down.

Description

A kind of lighting jig
Technical field
The present invention relates to display technique field, particularly relate to a kind of lighting jig.
Background technology
Backlight module is one of key components and parts of display panels, and because liquid crystal itself is not luminous, namely the function of backlight module is to provide sufficient brightness and the light source be evenly distributed, and makes the normal show image of display panels energy.Manufacture in process due to backlight module, the phenomenon being mixed into impurity may be occurred, or have a stain, cut etc., all can affect the quality of display screen, therefore need to provide a kind of lighting jig that can detect backlight product quality.
Inventor is realizing finding in process of the present invention, after testing a backlight module at every turn, all need to disconnect the power switch in lighting jig, and then when testing next time, after guaranteeing that by the hold down gag in pressure lighting jig the power output terminal of the power input terminal on the flexible PCB (FPC) in backlight module and the circuit board in lighting jig also compresses it, closed electrical source switch again, complex operation.Therefore, carry out in the process of lighting test at use lighting jig to backlight module, always there will be the phenomenon that operating personnel forget disconnecting power switch after test terminates, and when testing next backlight module, circuit board hot line job in lighting jig, at the power input period of the day from 11 p.m. to 1 a.m of the flexible PCB of compression backlight module, point discharge can be produced between the power input terminal of the FPC in the power output terminal of circuit board and backlight module, moment the phenomenon such as surging, and then burn is caused to the FPC on backlight module, the phenomenon such as to burn out, affect product quality.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of lighting jig, when using this lighting jig to carry out lighting test to backlight module, and the possibility that the phenomenon such as can reduce the burn to flexible PCB in backlight module, burn out occurs.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
The invention provides a kind of lighting jig, comprise the lighting jig body of platy structure, be positioned at the power switch of described lighting jig body, also comprises:
Be positioned at the compressing structure above described lighting jig body, described compressing structure comprises and compresses body and to the telescopic end subgroup of downward-extension and switch contact, described telescopic end subgroup comprises at least one flexible terminal, described switch contact corresponds to described power switch and arranges, described telescopic end subgroup is arranged corresponding to the power input terminal of backlight module, and the distance between described switch contact and described power switch is greater than the distance between described telescopic end subgroup and described power input terminal;
Connect the drive mechanism of described compression body and described lighting jig body, described drive mechanism drives described compression body to move up and down.
Further, described drive mechanism and be threaded engagement between described compression body and described lighting jig body.
Further, be threaded engagement between described switch contact and described compression body.
Further, described drive mechanism is driven by stepper motor.
Further, described lighting jig body is provided with the litter that at least two are parallel to described drive mechanism, and described compression body is provided with the linear bearing coordinating described litter.
Further, the collapsible distance of described telescopic end subgroup is 6mm.
Further, described lighting jig body also comprises:
For holding the groove of described backlight module, and the confession being positioned at described groove both sides pick and place described backlight module pick and place mouth.
Further, described lighting jig body also comprises control area, and described control area comprises the total power switch for powering for described lighting jig.
Further, described control area also comprises the current adjusting structural for the size of current regulating described lighting jig to export to described power input terminal.
Further, described control area also comprises the gauge tap of stepper motor.
In the technical scheme of the embodiment of the present invention, drive mechanism can drive compression body to move down, simultaneously, because the distance between described switch contact and described power switch is greater than the distance between described telescopic end subgroup and described power input terminal, therefore, in the process that compression body moves down, first telescopic end subgroup touches the power input terminal of backlight module, and compress body when continuing to move down, telescopic end subgroup is subject to the conflict effect of power input terminal and shrinks, until switch contact touches power switch and presses power switch; In addition, after terminating the detection of this backlight module, in the process moving up compression body, first switch contact leaves power switch, and afterwards, telescopic end subgroup slowly leaves power input terminal because of its contraction deformation occurred.Ensure that backlight module is changed when lighting jig power-off, prevent operating personnel to cause burn owing to forgetting the power switch that disconnects lighting jig to the FPC on backlight module, the phenomenon such as to burn out, ensure that the quality of product.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation one of the lighting jig in the embodiment of the present invention;
Fig. 2 is the structural representation two of the lighting jig in the embodiment of the present invention;
Fig. 3 is the structural representation three of the lighting jig in the embodiment of the present invention.
Description of reference numerals:
1-lighting jig body; 2-power switch; 3-compressing structure;
31-compress body; 32-telescopic end subgroup; 33-switch contact;
34-linear bearing; 4-backlight module; 41-power input terminal;
5-drive mechanism; 6-stepper motor; 7-litter;
8-groove; 9-pick and place mouth; 10-control area;
101-total power switch; 102-general supply input socket; 103-power light;
104-current adjusting structural; 105-Current adjustment display jack; 106-gauge tap.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one
The embodiment of the present invention provides a kind of lighting jig, and as shown in Figure 1, this lighting jig comprises the lighting jig body 1 of platy structure, is positioned at the power switch 2 of described lighting jig body 1, also comprises:
Be positioned at the compressing structure 3 above described lighting jig body 1, described compressing structure 3 comprises compression body 31, and to the telescopic end subgroup 32 of downward-extension and switch contact 33, described switch contact 33 corresponds to described power switch 2 and arranges, described telescopic end subgroup 32 comprises at least one flexible terminal, the power input terminal 41 that described telescopic end subgroup 32 corresponds to backlight module 4 is arranged, wherein, as shown in Figure 2, distance between described switch contact 33 and described power switch 2 is greater than the distance between described telescopic end subgroup 32 and described power input terminal 41, thus when ensureing switch contact 33 by pressure power switch 2, telescopic end subgroup 32 fully contacts with power input terminal 41, as shown in Figure 3.
As shown in Figure 1, connect the drive mechanism 5 of described compression body 31 and described lighting jig body 1, described drive mechanism 5 can drive described compression body 31 to move up and down.
In the technical scheme of the embodiment of the present invention, drive mechanism can drive compression body to move down, simultaneously, because the distance between described switch contact and described power switch is greater than the distance between described telescopic end subgroup and described power input terminal, therefore, in the process that compression body moves down, first telescopic end subgroup touches the power input terminal of backlight module, and compress body when continuing to move down, telescopic end subgroup is subject to the conflict effect of power input terminal and shrinks, until switch contact touches power switch and presses power switch; In addition, after terminating the detection of this backlight module, in the process moving up compression body, first switch contact leaves power switch, and afterwards, telescopic end subgroup slowly leaves power input terminal because of its contraction deformation occurred.Ensure that backlight module is changed when lighting jig power-off, prevent operating personnel to cause burn owing to forgetting the power switch that disconnects lighting jig to the FPC on backlight module, the phenomenon such as to burn out, ensure that the quality of product.
Wherein, the quantity of the flexible terminal in arbitrary telescopic end subgroup 32 of the present invention is preferably 4.
Further, in order to ensure that switch contact 33 is when touching and press power switch 2, fully contact between telescopic end subgroup 32 with power input terminal 41, in embodiments of the present invention, when telescopic end subgroup 32 should be made to be contracted to predetermined contract by distance by adjustment, switch contact 41 is just by pressure power switch, then this lighting jig starts to detect backlight module 4.Preferably, be threaded engagement between described switch contact 41 and described compression body 31, so that the distance between adjustment switch contact 33 and power switch 2, such as, as shown in Figure 2 or Figure 3, this switch contact 33 for being screwed in the bolt compressed on body, operationally, its head pushing power switch 2.
Preferably, predetermined contract by distance is the half or 1/3rd of the collapsible distance of telescopic end subgroup 32, if the collapsible distance of telescopic end subgroup 32 is 6mm, then predetermined contract by distance is 3mm or 2mm.The embodiment of the present invention does not limit this.
In embodiments of the present invention, preferably, described drive mechanism 5 and be threaded engagement between described compression body 31 and described lighting jig body 1.Then by rotary drive structure, can realize compressing moving up and down of body 31.
Concrete, in embodiments of the present invention, in order to make the operation of this lighting jig more simple, simultaneously more accurate in order to make to compress moving up and down of body 31, prevent the structures such as switch contact 33, power switch 2, telescopic end subgroup 32 from damaging owing to compressing excessively moving down of body 31, described drive mechanism 5 is driven by stepper motor 6.
Stepper motor 6 is opened loop control unit stepper motor parts electric impulse signal being changed into angular displacement or displacement of the lines.When non-overload, the rotating speed of stepper motor, the position of stopping only depending on frequency and the umber of pulse of pulse signal, and not by the impact of load change, when stepper motor 6 receives a pulse signal, it rotates a fixing angle with regard to Driving Stepping Motor by the direction of setting, be called " step angle ", its rotation runs step by step with fixing angle.Pilot angle displacement can be carried out by gating pulse number, thus reach the object of accurately location; Speed and the acceleration of electric machine rotation can be controlled simultaneously by gating pulse frequency, thus reach the object of speed governing.
In embodiments of the present invention, in advance by setting the number of pulse, the angle of stepper motor 6 rotary drive structure can be set, and then the distance that control compression body 31 moves up and down.Or, also by arranging the anglec of rotation of stepper motor 6, control the displacement compressing body 31.
Further, in order to ensure to compress body 31 in the process moved up and down, described switch contact 33 corresponds to described power switch 2 all the time and arranges, and the power input terminal 41 that described telescopic end subgroup 32 corresponds to backlight module 4 is arranged, in embodiments of the present invention, as shown in Figure 1, described lighting jig body 1 is provided with the litter 7 that at least two are parallel to described drive mechanism, described compression body 31 is provided with the linear bearing 34 coordinating described litter 7, and described linear bearing 34 and described litter 7 are arranged one to one.The cooperation of linear bearing 34 and litter 7, ensure that compressing body 31 can move up and down vertically for lighting jig body 1, and then ensure that telescopic end subgroup 32 can be mortgaged exactly on the power input terminal 41 of backlight module 4.
Meanwhile, because straight line holds the effect of axle 34, compress body 31 in the process moved up and down and between litter 7 friction force very little, making to compress body 31 can easily to-and-fro movement, additionally can not increase the power of stepper motor 6.
Wherein, linear bearing 34 is chosen as metal linear bearing or plastic linear bearing, and the embodiment of the present invention does not limit this.
Further, as shown in Figure 1, described lighting jig body 1 also comprises the groove 8 for holding described backlight module 4, and the confession being positioned at described groove 8 both sides pick and place described backlight module 4 pick and place mouth 9.
Concrete, before operating personnel test backlight module 4, need backlight module 4 be placed in groove 8; After being completed this backlight module 4, also need backlight module 4 to take out in groove 8.As shown in Figure 1, the conveniently operation of operating personnel, groove 8 both sides are provided with and pick and place mouth 9 for what pick and place described backlight module 4, concrete, pick and place mouth 9 when operating personnel pick and place backlight module 4 with hand, the hand of operating personnel can be held, backlight module 4 can be placed in groove 8 by operating personnel reposefully.
In embodiments of the present invention, as shown in Figure 1, lighting jig body 1 also comprises control area 10, described control area 10 is provided with the total power switch 101 for powering for described lighting jig, accordingly, described control area 10 also comprises general supply input socket 102, is the input socket of the 12V DC voltage of lighting jig.
Further, lighting jig total power switch 101 now can be well understood in order to make operating personnel whether to open, the control area 10 of lighting jig also can be provided with power light 103, power light 103 is preferably positioned over total power switch 101 side, when total power switch 101 is opened, power light 103 brightens, and when total power switch 101 is closed, whether power light 103 extinguishes, carry out teaching process personnel total power switch 101 open with this.
Further, because the specification of backlight module 4 is different, its size of current normally required for work also may be different, therefore, described control area 10 also comprises the current adjusting structural 104 for the size of current regulating described lighting jig to export to described power input terminal 41, the size of current that operating personnel regulate lighting jig to export by rotatory current adjustment structure 104.In addition, regulate accurately for the ease of current adjusting structural 104 pairs of electric currents, control area 10 is also provided with Current adjustment display jack 105, this hole coordinates multimeter to realize, when regulating electric current, multimeter is inserted in this Current adjustment display jack 105, can know that the electric current that lighting jig exports is much according to the reading that multimeter shows.
In addition, due to as shown in Figure 1, this lighting jig can be tested two backlight modules 4 simultaneously, therefore, this lighting jig 4 has two telescopic end subgroups 32, has two current adjusting structurals 104 accordingly, can adjust the output current of corresponding telescopic end subgroup 32 respectively.Similar, each current adjusting structural 104 correspondence is provided with a Current adjustment display jack 105.
Concrete, in embodiments of the present invention, this control area 10 also can comprise the gauge tap 106 of stepper motor 6, namely this gauge tap 106 is opened, stepper motor 6 drives drive mechanism 5 to rotate forward, and makes to compress body 31 and moves down, until stepper motor 6 rotates through default angle, now be positioned at the switch contact 33 compressed on body 31 and just press power switch 2, start to test backlight module 4; Close this gauge tap 106, stepper motor 6 drives drive mechanism 5 reverse rotation, makes to compress body 31 and moves up, until stepper motor 6 reinstatement.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.

Claims (10)

1. a lighting jig, comprises the lighting jig body of platy structure, is positioned at the power switch of described lighting jig body, it is characterized in that, also comprise:
Be positioned at the compressing structure above described lighting jig body, described compressing structure comprises and compresses body and to the telescopic end subgroup of downward-extension and switch contact, described telescopic end subgroup comprises at least one flexible terminal, described switch contact corresponds to described power switch and arranges, described telescopic end subgroup is arranged corresponding to the power input terminal of backlight module, and the distance between described switch contact and described power switch is greater than the distance between described telescopic end subgroup and described power input terminal;
Connect the drive mechanism of described compression body and described lighting jig body, described drive mechanism drives described compression body to move up and down.
2. lighting jig according to claim 1, is characterized in that,
Described drive mechanism and be threaded engagement between described compression body and described lighting jig body.
3. lighting jig according to claim 1, is characterized in that,
Be threaded engagement between described switch contact and described compression body.
4. lighting jig according to claim 2, is characterized in that, described drive mechanism is driven by stepper motor.
5. lighting jig according to claim 1, is characterized in that,
Described lighting jig body is provided with the litter that at least two are parallel to described drive mechanism, and described compression body is provided with the linear bearing coordinating described litter.
6. lighting jig according to claim 1, is characterized in that,
The collapsible distance of described telescopic end subgroup is 6mm.
7. lighting jig according to claim 1, is characterized in that, described lighting jig body also comprises:
For holding the groove of described backlight module, and the confession being positioned at described groove both sides pick and place described backlight module pick and place mouth.
8. lighting jig according to claim 1, is characterized in that, described lighting jig body also comprises control area, and described control area comprises the total power switch for powering for described lighting jig.
9. lighting jig according to claim 8, is characterized in that, described control area also comprises the current adjusting structural for the size of current regulating described lighting jig to export to described power input terminal.
10. lighting jig according to claim 8, is characterized in that, described control area also comprises the gauge tap of stepper motor.
CN201310681219.8A 2013-12-12 2013-12-12 A kind of lighting jig Active CN103645035B (en)

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CN104635363B (en) * 2015-03-11 2017-08-11 京东方光科技有限公司 The lighting jig of backlight and apply its Defect Detection equipment
CN104991360A (en) * 2015-08-07 2015-10-21 赵媛媛 Accurate adjustable backlight lighting tool
CN105588710B (en) * 2016-03-07 2019-01-18 京东方科技集团股份有限公司 Backlight monitoring device and lighting machine
CN106646949B (en) * 2016-12-29 2019-09-10 武汉华星光电技术有限公司 Lighting test equipment and lighting test method
CN110296936A (en) * 2019-07-17 2019-10-01 武汉华星光电技术有限公司 A kind of lighting test jig and its test method

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CN201654377U (en) * 2010-04-16 2010-11-24 华映视讯(吴江)有限公司 Lamp lighting platform device
CN201909917U (en) * 2010-12-29 2011-07-27 京东方科技集团股份有限公司 Test fixture
CN202133628U (en) * 2011-03-31 2012-02-01 京东方科技集团股份有限公司 Lighting jig
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